There has been a recent genetic study that looks into Vikings and their hair. In the study, it was evident that not only did the Vikings have braids, but they were more common dark hair over blond hair. In that same study, it was evident that not all Viking had been born into the lifestyle; some had adapted into it. While they were researching into Vikings, it showed that Vikings are not pure Scandinavians. The genetics indicate that they most likely originated from modern-day Denmark and went on to invade different sections of Europe and Asia. I think that it is accurate because they had used genetic DNA and also looked back into other evidence they had received. The study followed old studies to find similarities between the two and came up with how even though it could still be slightly off.